I bought one at 103K miles. I am too familiar with the Prius to be scared by
the battery life. If it does fail, I expect to pay under $1000 for a used
Worry about something that has a bad reputation - the Prius hybrid battery
has a stellar reputation.
i'm an electrical engineer who works with batteries for many yrs. the
question isn't "if" it will fail, it WILL fail. batteries have predictable
lives - like tires..but i'm not worried enough that it kept me from buying
Of course you are right that it will fail sometime, but there is not nearly
enough data to say when. We can say with certainty the expected battery life
is considerably greater than 10 years, the length of time the Prius has been
sold in Japan. Since the failure rate on those is still not significant
enough to provide useful data, that's all we have. The life will be
predictable when we get the data, but not yet. I would be surprised if more
than a handful last 50 years, but 20 (already common for industrial
lead-acid batteries) wouldn't surprise me in the least.
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